Looks like two things: 1. (Unrelated to this ticket) It doesn't appear possible to disable `TrustDNS`. 2. If a valid hostname is provided by the user in 4.9.0, we compare that to the DN and SANs. However, we no longer do a reverse DNS lookup in case that fails. Note that if you use the IP address directly (`root://192.170.227.207//bar/baz`), it works. Should be a straightfoward fix. -- You are receiving this because you commented. Reply to this email directly or view it on GitHub: https://github.com/xrootd/xrootd/issues/841#issuecomment-430579517 ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-DEV list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-DEV&A=1